	/**
	 * jQuery MD5 hash algorithm function
	 * 
	 * 	<code>
	 * 		Calculate the md5 hash of a String 
	 * 		String $.md5 ( String str )
	 * 	</code>
	 * 
	 * Calculates the MD5 hash of str using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash. 
	 * MD5 (Message-Digest algorithm 5) is a widely-used cryptographic hash function with a 128-bit hash value. MD5 has been employed in a wide variety of security applications, and is also commonly used to check the integrity of data. The generated hash is also non-reversable. Data cannot be retrieved from the message digest, the digest uniquely identifies the data.
	 * MD5 was developed by Professor Ronald L. Rivest in 1994. Its 128 bit (16 byte) message digest makes it a faster implementation than SHA-1.
	 * This script is used to process a variable length message into a fixed-length output of 128 bits using the MD5 algorithm. It is fully compatible with UTF-8 encoding. It is very useful when u want to transfer encrypted passwords over the internet. If you plan using UTF-8 encoding in your project don't forget to set the page encoding to UTF-8 (Content-Type meta tag). 
	 * This function orginally get from the WebToolkit and rewrite for using as the jQuery plugin.
	 * 
	 * Example
	 * 	Code
	 * 		<code>
	 * 			$.md5("I'm Persian."); 
	 * 		</code>
	 * 	Result
	 * 		<code>
	 * 			"b8c901d0f02223f9761016cfff9d68df"
	 * 		</code>
	 * 
	 * @alias Muhammad Hussein Fattahizadeh < muhammad [AT] semnanweb [DOT] com >
	 * @link http://www.semnanweb.com/jquery-plugin/md5.html
	 * @see http://www.webtoolkit.info/
	 * @license http://www.gnu.org/licenses/gpl.html [GNU General Public License]
	 * @param {jQuery} {md5:function(string))
	 * @return string
	 */
	(function($) {
	    var rotateLeft = function(lValue, iShiftBits) {
	        return (lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));
	    }
	    var addUnsigned = function(lX, lY) {
	        var lX4, lY4, lX8, lY8, lResult;
	        lX8 = (lX & 0x80000000);
	        lY8 = (lY & 0x80000000);
	        lX4 = (lX & 0x40000000);
	        lY4 = (lY & 0x40000000);
	        lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);
	        if (lX4 & lY4) return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
	        if (lX4 | lY4) {
	            if (lResult & 0x40000000) return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
	            else return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
	        } else {
	            return (lResult ^ lX8 ^ lY8);
	        }
	    }
	    var F = function(x, y, z) {
	        return (x & y) | ((~x) & z);
	    }
	    var G = function(x, y, z) {
	        return (x & z) | (y & (~z));
	    }
	    var H = function(x, y, z) {
	        return (x ^ y ^ z);
	    }
	    var I = function(x, y, z) {
	        return (y ^ (x | (~z)));
	    }
	    var FF = function(a, b, c, d, x, s, ac) {
	        a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));
	        return addUnsigned(rotateLeft(a, s), b);
	    };
	    var GG = function(a, b, c, d, x, s, ac) {
	        a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));
	        return addUnsigned(rotateLeft(a, s), b);
	    };
	    var HH = function(a, b, c, d, x, s, ac) {
	        a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));
	        return addUnsigned(rotateLeft(a, s), b);
	    };
	    var II = function(a, b, c, d, x, s, ac) {
	        a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));
	        return addUnsigned(rotateLeft(a, s), b);
	    };
	    var convertToWordArray = function(string) {
	        var lWordCount;
	        var lMessageLength = string.length;
	        var lNumberOfWordsTempOne = lMessageLength + 8;
	        var lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64;
	        var lNumberOfWords = (lNumberOfWordsTempTwo + 1) * 16;
	        var lWordArray = Array(lNumberOfWords - 1);
	        var lBytePosition = 0;
	        var lByteCount = 0;
	        while (lByteCount < lMessageLength) {
	            lWordCount = (lByteCount - (lByteCount % 4)) / 4;
	            lBytePosition = (lByteCount % 4) * 8;
	            lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));
	            lByteCount++;
	        }
	        lWordCount = (lByteCount - (lByteCount % 4)) / 4;
	        lBytePosition = (lByteCount % 4) * 8;
	        lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);
	        lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
	        lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
	        return lWordArray;
	    };
	    var wordToHex = function(lValue) {
	        var WordToHexValue = "",
	            WordToHexValueTemp = "",
	            lByte, lCount;
	        for (lCount = 0; lCount <= 3; lCount++) {
	            lByte = (lValue >>> (lCount * 8)) & 255;
	            WordToHexValueTemp = "0" + lByte.toString(16);
	            WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2);
	        }
	        return WordToHexValue;
	    };
	    var uTF8Encode = function(string) {
	        string = string.replace(/\x0d\x0a/g, "\x0a");
	        var output = "";
	        for (var n = 0; n < string.length; n++) {
	            var c = string.charCodeAt(n);
	            if (c < 128) {
	                output += String.fromCharCode(c);
	            } else if ((c > 127) && (c < 2048)) {
	                output += String.fromCharCode((c >> 6) | 192);
	                output += String.fromCharCode((c & 63) | 128);
	            } else {
	                output += String.fromCharCode((c >> 12) | 224);
	                output += String.fromCharCode(((c >> 6) & 63) | 128);
	                output += String.fromCharCode((c & 63) | 128);
	            }
	        }
	        return output;
	    };
	    $.extend({
	        md5: function(string) {
	            var x = Array();
	            var k, AA, BB, CC, DD, a, b, c, d;
	            var S11 = 7,
	                S12 = 12,
	                S13 = 17,
	                S14 = 22;
	            var S21 = 5,
	                S22 = 9,
	                S23 = 14,
	                S24 = 20;
	            var S31 = 4,
	                S32 = 11,
	                S33 = 16,
	                S34 = 23;
	            var S41 = 6,
	                S42 = 10,
	                S43 = 15,
	                S44 = 21;
	            string = uTF8Encode(string);
	            x = convertToWordArray(string);
	            a = 0x67452301;
	            b = 0xEFCDAB89;
	            c = 0x98BADCFE;
	            d = 0x10325476;
	            for (k = 0; k < x.length; k += 16) {
	                AA = a;
	                BB = b;
	                CC = c;
	                DD = d;
	                a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);
	                d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);
	                c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB);
	                b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);
	                a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);
	                d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);
	                c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613);
	                b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501);
	                a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8);
	                d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);
	                c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);
	                b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);
	                a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122);
	                d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193);
	                c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E);
	                b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821);
	                a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);
	                d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340);
	                c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);
	                b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);
	                a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);
	                d = GG(d, a, b, c, x[k + 10], S22, 0x2441453);
	                c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);
	                b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);
	                a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);
	                d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);
	                c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);
	                b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);
	                a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);
	                d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);
	                c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);
	                b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);
	                a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);
	                d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681);
	                c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);
	                b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);
	                a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);
	                d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);
	                c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);
	                b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);
	                a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);
	                d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);
	                c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);
	                b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05);
	                a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);
	                d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);
	                c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);
	                b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);
	                a = II(a, b, c, d, x[k + 0], S41, 0xF4292244);
	                d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97);
	                c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);
	                b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039);
	                a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3);
	                d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);
	                c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);
	                b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1);
	                a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);
	                d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);
	                c = II(c, d, a, b, x[k + 6], S43, 0xA3014314);
	                b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);
	                a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82);
	                d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);
	                c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);
	                b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391);
	                a = addUnsigned(a, AA);
	                b = addUnsigned(b, BB);
	                c = addUnsigned(c, CC);
	                d = addUnsigned(d, DD);
	            }
	            var tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);
	            return tempValue.toLowerCase();
	        }
	    });
	})(Zepto);